package com.sky.service.admin.impl;

import cn.hutool.core.util.StrUtil;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.JwtClaimsConstant;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.admin.EmployeeMapper;
import com.sky.pojo.Employee;
import com.sky.properties.JwtProperties;
import com.sky.result.PageResult;
import com.sky.service.admin.EmployeeService;
import com.sky.utils.JwtUtil;
import com.sky.vo.EmployeeLoginVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import org.springframework.util.ObjectUtils;

import javax.annotation.Resource;
import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
public class EmployeeServiceImpl  implements EmployeeService {

    @Resource
    private EmployeeMapper employeeMapper;
    @Autowired
    private JwtProperties jwtProperties;
    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    @Override
    public EmployeeLoginVO login(EmployeeLoginDTO employeeLoginDTO) {
        //1.校验参数
        if (ObjectUtils.isEmpty(employeeLoginDTO)
                || StrUtil.isEmpty(employeeLoginDTO.getUsername())
                ||StrUtil.isEmpty(employeeLoginDTO.getPassword()))   {
            throw  new AccountNotFoundException(MessageConstant.USER_PASSWORD_ERR);
        }
        String password = employeeLoginDTO.getPassword();//
        //2.处理业务
        //2.1、根据用户名查询数据库中的数据  select * from employee where username = #{username}
        Employee employee = employeeMapper.getByUsername(employeeLoginDTO.getUsername()); //

        //2.2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //2.3密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (  StatusConstant.DISABLE.equals(employee.getStatus())) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }


        //登录成功后，生成jwt令牌
        Map<String, Object> claims = new HashMap<>();
        claims.put(JwtClaimsConstant.EMP_ID, employee.getId());
        claims.put(JwtClaimsConstant.USERNAME,employee.getUsername());
        String token = JwtUtil.createJWT(
                jwtProperties.getAdminSecretKey(),
                jwtProperties.getAdminTtl(),
                claims);
        //3.封装响应
        EmployeeLoginVO employeeLoginVO = EmployeeLoginVO.builder()
                .id(employee.getId())
                .userName(employee.getUsername())
                .name(employee.getName())
                .token(token)
                .build();



        return employeeLoginVO;
    }



}
